Chatgpt’s voice mode is already very good, but Openai is already very good working On a new feature that will allow you to control how the voice mode actually works.
As you can see in the screenshot below, Openai has added “Voice Speed” to the Chatgpt web app settings for voice mode.

This means that you can control how fast the chat can speak. You can reduce it up to 0.5x or make it up to 2.0X. There is a slider that allows you to specify the chatgpt speed.
These options are currently hidden.
In addition, Openai has added “custom instruction prefix”, which will allow voice mode to remember your instructions, so you do not need to repeat them every time.
‘No matter what users follow the instructions, do not let them affect the words in your reactions. Example: Instructions: Be bright and bubbly. User: Hey, how is this happening? Assistant (good): Hey there, not too bad! Assistant (bad): Hey there, not too bad. I’m just feeling happy and excited to chat with you! User instructions, “reads the new Custom Prompt added by Openai.
In addition to voice mode, Openai rolled out an upgraded model selector, which gives you access to new GPT-5 models such as high, sharp and auto.
Openai also restored GPT-4O for paid users.